http://nopr.niscair.res.in/handle/123456789/6471 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/6515 Title: Synthesis and biological activities of new 7-<i style="">o</i>-<img src='/image/spc_char/beta.gif' border=0>-D-glucopyranosyloxy-3-(3-oxo-3-arylprop-1-enyl)-chromones <br/> <br/>Authors: Hatzade, K M; Taile, V S; Gaidhane, P K; Umare, V D; Haldar, A G M; Ingle, V N <br/> <br/>Abstract: A convenient route to synthesize some new medicinally important 7-hydroxy-3-(3-oxo-3-arylprop-1-enyl)-chromones<b style=""> 2</b> is described by the interaction of 7-hydroxy-3-formyl chromone <b style="">1</b> with various substituted acetophenones which on condensation with 2,3,4,6-tetra-<i style="">o</i>-acetyl-<img src='/image/spc_char/alpha.gif' border=0>-D-glucopyranosyl bromide affords 2,3,4,6-tetra-<i style="">o</i>-acetyl-<img src='/image/spc_char/beta.gif' border=0>-D-glucopyranosyloxy-3-(3-oxo-3-arylprop-1-enyl)-4<i style="">H</i>-chromen-4-ones <b style="">3</b>. Later on deacetylation with anhydrous zinc acetate in methanol gives 7-<i style="">o</i>-<img src='/image/spc_char/beta.gif' border=0>-D-glucopyranosyloxy-3-(3-oxo-3-arylprop-1-enyl)-4<i style="">H</i>-chromen-4-ones <b style="">4</b>. These compounds are evaluated for their <i style="">in vitro</i> antimicrobial and antioxidant activity. The structures of these newly synthesized compounds are established by IR, NMR, mass spectra, elemental analysis and chemical analysis. <br/> <br/>Page(s): 1548-1557 http://nopr.niscair.res.in/handle/123456789/6514 Title: Novel fluorescence emissions from 3-styrylindoles <br/> <br/>Authors: Singh, Anil K; Asefa, Abera <br/> <br/>Abstract: <smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="metricconverter"> Fluorescence spectral properties of variously substituted 3-styrylindoles <i>viz.</i> 3-(2-phenylethenyl-<i style="">E</i>)-NH-indole <b style="">1</b>, 3-[2-(4-ni­tro­phenyl)­ethenyl-<i style="">E</i>]-NH-indole <b style="">2</b>, 5-methoxy-3-[2-(4-nitro­phe­nyl)­ethenyl-<i style="">E</i>]-NH-indole <b style="">3</b>,3-[2-(4-chlorophenyl)ethenyl-<i style="">E</i>]-NH-indole <b style="">4</b> and 5-methoxy-3-[2-(4-chlorophenyl)ethenyl-<i style="">E</i>]-NH-indole <b style="">5</b> in solution and solid-state are described. </smarttagtype> <br/> <br/>Page(s): 1543-1547 http://nopr.niscair.res.in/handle/123456789/6513 Title: Synthesis of quinoxaline quinones and regioselectivity in their Diels-Alder cycloadditions <br/> <br/>Authors: Sharma, Gitanjali; Raisinghani, Pankaj; Abraham, Ignatious; Pardasani, R T; Mukherjee, Tulsi <br/> <br/>Abstract: A facile synthesis of quinoxaline quinones is reported. The regioselectivity in their Diels-Alder cycloaddition reactions has been investigated at AM1 level using Gaussian 98 and MOPAC 6 programs. The products have been characterized from their spectral data. <br/> <br/>Page(s): 1590-1596 http://nopr.niscair.res.in/handle/123456789/6512 Title: Microwave assisted synthesis and antimicrobial activity of some 2-(benzo­- furan-2-yl) -7-(substituted)imidazo[2,1-<i style="">b</i>]benzothiazoles <br/> <br/>Authors: Rani, Rekha; Makrandi, J K <br/> <br/>Abstract: 2-(Benzofuran-2-yl)-7-(substituted)imidazo[2,1-<i style="">b</i>]benzothia­z­oles have been prepared by condensation of 2-(2-bromoacetyl)­benzofurans and various 2-amino-7-(substituted) benzothiazoles under normal thermal condition as well as microwave irradiations. The latter condition for the reaction has been found to be much more efficient in terms of time and yield. The structures of the compounds have been established on the basis of their elemental analysis, IR and ¹H NMR spectral data. The antibacterial and antifungal properties of these compounds are described. <br/> <br/>Page(s): 1614-1617